California Achieved Significant Groundwater Recharge Last Year, State Report Says

A year of average precipitation gave California’s groundwater supplies a significant boost, according to a state analysis released Tuesday.

California’s aquifers gained an estimated 2.2 million acre-feet of groundwater in the 12 months that ended Sept. 30, the state’s 2024 water year. That’s about half the storage capacity of Shasta Lake, California’s largest reservoir.